code: def formatseq(self, obj, paren):
      return (
          self.u
          + paren[0]
          + ", ".join([self.format(v) for v in obj])
          + paren[1]
      )
  
imports: import time
  import sys
  import weakref
label_desc: Use image node_id 7 for calling the APSWTracer obj's underlying member method code with example usage: obj.formatseq(obj, paren) and returns: unknown